Cover plate structure for glass fiber tank furnace forehearth

A cover plate structure for a glass fiber tank furnace forehearth comprising:

• chest wall bricks at two sides of the forehearth;
• cover plate bricks each spanning between a top end of at least one of the chest wall bricks at one of the two sides of the forehearth and a top end of at least one of the chest wall bricks at another one of the two sides of the forehearth;
• a thermal insulation layer covering outer surfaces of the cover plate bricks and the chest wall bricks;
• and
• a gap-covering brick fixed between the cover plate bricks and the thermal insulation layer and covering a gap between adjacent ones of the cover plate bricks;
• wherein:
• one cover plate brick of the cover plate bricks includes a first groove between an edge and a top of the one cover plate brick;
• the gap-covering brick includes a second groove at a bottom of the gap-covering brick;
• a side wall of the gap-covering brick is embedded in the first groove;
• and
• a height difference between the edge and the top of the one cover plate brick is greater than or equal to a difference between a thickness of the gap-covering brick and a depth of the second groove.